A member asked:

Help docs! i'm trying to find out what causes the itchiness you get when you touch poison ivy?

A doctor has provided 1 answer
Dr. Doanh Nguyen, md, faaaai answered

Specializes in Allergy and Immunology

Poison ivy: The itchiness is from inflammation of the skin or contact dermatitis at the area of exposure to the oily resin called urushiol. It's the oily substance from the leaves or stems.

Answered 1/6/2014

4.6k views

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